Home / 4,260.11-6,390.23-1,918.89

Finding the Fourth Proportional to 4,260.11, 6,390.23 and 1,918.89

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Solution

The fourth proportional to 4,260.11, 6,390.23 and 1,918.89 is: 2,878.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.11 : 6,390.23 = 1,918.89 : x
  2. Step 2: Convert to fraction form
    4,260.11/6,390.23 = 1,918.89/x
  3. Step 3: Cross multiply
    4,260.11x = 6,390.23 × 1,918.89
  4. Step 4: Simplify right side
    4,260.11x = 12,262,138.85
  5. Step 5: Solve for x
    x = 12,262,138.85/4,260.11
  6. Step 6: Final answer
    x = 2,878.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.